Sistemas y Señales Biomédicos

Ingeniería Biomédica

Ph.D. Pablo Eduardo Caicedo Rodríguez

2025-01-20

Sistemas y Señales Biomedicos - SYSB

Introduction

Biosignals

  • Bio - That came from a biological being
  • Signal - A signal is a function that conveys information about a physical phenomenon.
  • Biosignals - The search for information from living systems to know its health state

Introduction

Biosignals

The codification of biosignals into variations: * Electrical * Mechanical * Chemical * Thermal

Introduction

Taken from Semmlow et al

Introduction

Taken from Semmlow et al

Time line

Biomedical Signals:

  • 1791: Luigi Galvani discovers electrical signals in living tissues (frog legs)

  • 1830s: Carlo Matteucci studies electrical signals in the heart

  • 1887: Willem Einthoven invents the first electrocardiograph (ECG)

  • 1900s: James Mackenzie develops the first clinical ECG machine

Time line

Biomedical Signals:

  • 1920s: Electroencephalography (EEG) is developed by Hans Berger

  • 1930s: Electromyography (EMG) is developed by John Humphrey and others

  • 1940s: Development of the first commercial ECG machines

  • 1950s: Signal processing techniques are applied to biomedical signals

Time line

Biomedical Signals:

  • 1960s: Digital signal processing and computer analysis of biomedical signals emerge

  • 1970s: Biomedical signal processing becomes a recognized field

  • 1980s: Development of Holter monitoring (24-hour ECG)

  • 1990s: Advances in signal processing and machine learning applied to biomedical signals

Time line

Biomedical Signals:

  • 2000s: Development of wearable devices and mobile health (mHealth) technologies

  • 2010s: Emergence of big data analytics and cloud computing in biomedical signal processing

  • 2020s: Integration of artificial intelligence (AI) and machine learning (ML) in biomedical signal processing

Time line

Biomedical Images:

  • 1895: Wilhelm Roentgen discovers X-rays, leading to medical imaging

  • 1900s: X-ray technology improves with development of modern X-ray tubes

  • 1913: Albert Salomon develops mammography

  • 1920s: Ultrasound technology is developed by Karl Dussik and others

Time line

Biomedical Images:

  • 1930s: Nuclear medicine emerges with development of radioactive tracers

  • 1950s: Computed Tomography (CT) scans are developed by Godfrey Hounsfield and Allan McLeod Cormack

  • 1960s: Development of medical ultrasound imaging

  • 1970s: Magnetic Resonance Imaging (MRI) is developed by Richard Ernst and others

Time line

Biomedical Images:

  • 1980s: Digital image processing and analysis techniques are applied to biomedical images

  • 1990s: Advances in MRI and CT scan technology, including 3D imaging

  • 2000s: Development of functional MRI (fMRI), diffusion tensor imaging (DTI), and other advanced MRI techniques

  • 2010s: Emergence of artificial intelligence (AI) and machine learning in medical imaging

Time line

Additional Milestones:

  • 1950s: Development of medical electronics and instrumentation
  • 1960s: First medical imaging computers are developed
  • 1970s: Development of digital image processing and analysis software
  • 1980s: Emergence of medical imaging informatics and PACS (Picture Archiving and Communication Systems)
  • 1990s: Development of telemedicine and teleradiology
  • 2000s: Emergence of electronic health records (EHRs) and health information exchanges (HIEs)
  • 2010s: Development of personalized medicine and precision health initiatives